Sulfur Tetrafluoride, SF4 Specialty Gas
Sulfur tetrafluoride is an inorganic compound and the most effective selective organic fluorinating agent widely used at present. It has an irreplaceable position in the production of fine chemicals, liquid crystal materials and high-end pharmaceutical industries.
Product Description
CAS NO | 7783-60-0 |
UN NO | 2418 |
EINECS NO | 232-013-4 |
Molecular weight | 108.06 |
Appearance | Colorless |
Melting point | −121.5~−120.5℃ |
Boiling point | −40.4℃ |
Density | 1.95g/m |
DOT Class | 2.3+8 |
Label | Toxic Gas, Corrosives |
Sulfur tetrafluoride Gas is a colorless gas with a distinct sulfurous odor. It is highly toxic by inhalation and is highly irritating to the skin, eyes and mucous membranes. It reacts violently with water and acids, producing toxic fluoride and sulfur oxide fumes and acidic solutions. Sulfur tetrafluoride is heavier than air.
The sulfur in SF4 is in the formal +4 oxidation state. Sulfur has a total of six valence electrons, two of which form lone pairs. Therefore, the structure of SF4 can be predicted using the principles of VSEPR theory: it is a seesaw shape with the S at the center. One of the three equatorial positions is occupied by non-bonding lone pair electrons. Therefore, this molecule has two different types of F ligands, two axial and two equatorial.
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